2. In the terminal, type:xattr -r -d com.apple.quarantine "/path/to/Rexuiz.app"maybe will work with leading sudoInstead of typing the path to the .app, you can just drag and drop the .app from finder into the terminal

3. a. put the Rexuiz folder in your Application folder.b. right click on Rexuiz.appc. Click show package contentd. go in Contents -> MacOSe. Open a terminal windowf. drag and drop rexuiz-dprm-sdl in the terminalg. type enterh. the game should launch without error

4. Here is another bunch of possible solutions from other resourceIn the Finder, control-click the app icon, then choose Open from the shortcut menu. Click Open on the dialog.ORUse xattr -r -d com.apple.quarantine "/path/to/Rexuiz.app"ORMove Rexuiz.app somewhere else and back using the Finder.P.S, We have very low testers amount with MacOS